Improvement in sole-trimming machines



2 Sheets--Sheet 2.

COYLE. Sole Trimming-Machines.

B. GALLAGHER & J.

Patented March 25, 1873.

UNITED STATES PATENT QFFIOE.

BERNARD GALLAGHER, OF ST. JOHN, CANADA, AND JOHN COYLE, OF BELFAST, GREAT BRITAIN.

IMPROVEMENT IN SOLE'TRIMMINGLMACHINES- Specification forming part of Letters Patent No. 137,066, dated March 25, 1873.

To all whom it may concern:

Be it known that we, BERNARD GALLA- GHER, of St. John, New Brunswick, in the Dominion of Canada, and JOHN OOYLE, of Belfast, in the county of Antrim and Kingdom of Great Britain, have jointly invented certain new and useful Improvements on Sole- Trimming and Edge-Setting Machines, of which the following is a specification:

Our invention relates to an improved machine for the purpose of trimming the soles and setting the edges of boot and shoe soles; and consists in the employment of rotating or stationary cutters operated in the ends of movable arms, the opposite ends of which are guided over a form of the exact shape of the boot or shoe sole that is to be trimmed. The movable arms are operated forward and back by means of an adjustable crank, a distance equal to the length of the sole of the boot or shoe. When the machine is used as an edgesetter, we dispense with the rotating cutters, and use instead thereof stationary polishers attached to the movable arms, and move the said edge-setters quickly and with a short stroke forward and back over the edge of the soles.

On the drawing, Figure l is a ground plan and Fig. 2 is.a side elevation, of our machine. Fig. 3 is an enlarged end view of the movable arms and the rotating cutters. Fig. 4 is a cross-section over one of the rotating cutters. Fig. 5 is a rear view of the adjustable drivingcrank, and Fig. 6 is a central longitudinal section over the line a: y, taken on Fig. 5. Fig. 7

. shows an enlarged rear end of one of the movable arms, and Fig. 8 shows a side view of Fig. 7.

Similar letters refer to similar parts wherever they occur on the drawing.

a is a suitable standard or support, on which the operating-table bis resting. To the upper side of the table I) is secured the bearings or guides c c, in which the bar d is made to move forward and back easily. To the upper side of the guides c c is attached a guideplate or form, 6, of the exact size and shape of the sole that is to be trimmed. To the forward end of the bar d are hinged the supports ff for the movable arms 9 g, as shown. On the upper side of the arms 9 g are the bearings h h, attached to the supports ff by means of a pin that passes through each of the arms 9 g, and is screwed into each of the supports f, f. Around these pins the arms g g are free to swing in a horizontal direction, and around the hinge in the end of the bar 01 in avertical direction, by which arrangement a universal joint is obtained for each arm at f. In the bearings h h is the shaft 1, movable. The shaft 1 is provided with two cordpulleysyi z, and one driving-pulley, 70, as shown on Fig. 1. In the forward extreme ends of the arms g g are attached standards m m, through which the shafts 'n n revolve and have their bearings. On the upper end of each of the shafts a n is attached a cord-pulley, o, by means of which the motion is communicated to the cuttershafts n n, from the cord-pulleys M, by means of suitable cords orbands, as shown in Figs. 1 and 2. To the lower end of the shaft n is secured the spirally-grooved cutter 12, fully shown in Figs. 3 and 4. Beneath each of the spiral cutters p p is attached a disk-cutter q q, for the purpose of trimming the upper side of the sole during the operation of the machine. Under the disk-cutters q q are the guides r 1" attached to the arms g g, in a manner as shown on Fig. 3, for the purpose of preventing the cutters 1) Q1) q from cutting the upper leather of the boots and shoes. The standards m m are each provided with two ears, 8 s, as

shown, through which the rod tis made mov-' able, and pressed downward by means of the spring a, or its equivalent, as shown. The lower ends of the rods t t serve as guides for the thickness of the soles of the boot or shoe. The rods t if maybe raised up at the commencement of the trimming by means of the levers 'v '2) taking hold on the under side of the spring a u, as shown. At the forward end of the table 1) are two projecting arms, 20 w, firmly secured, between which a suitable last-holder 1 is movable in guides in the arms to w. The shoe or boot 2 that is to be operated upon is supported on the lastholder 1, and the whole is made to swing around the pins 3 3. To the under side of the block 1 is attached a suitable curved bar, 4, of a form similar to that of the under side of the boot or shoe sole. The bar etis operated by the bent arm 5, attached to the reciprocating frame d, as shown in Fig.

2. When the arm 5 strikes the curved bar 4, the last-holder 1 and boot 2 are together swung a little around the pins 3 3, by means of which the curved sole of the boot or shoe is kept at right angles to the rotating cutters during the whole operation. The rear ends of the arms 9 g aremade in a manner as shown in Figs. 17 and 8, consisting of an eccentric cam, 6, adjustable in the arm 9 by means of the nut 7, or its equivalent, whereby the'posisition of the arms g 9 can be regulated with great nicety. The arms 9 9 cross each other at their rear ends, as shown in Fig. 1, and are drawn' toward each other by the use of the coiled spring 8 attached to both arms 9 g, as shown. The bar at is operated forward and back by means of the adjustable crank 9 and connecting-rod 10. The crank 9 is keyed to a shaft supported in a bearing 11 on the other end of the said crank-shaft is movable by a frictionpulley, 12, that runs loose on a frictionblock, 13, keyed to the crank-shaft. On the periphery of the block 13 is made a small notch, in which the lever 14 is made to rest when the machine is not in motion. The lever 14 is operated by means of the rod 15 and treadle 16, as shown, in such a manner that the machine is set in motion as soon as the operator places his foot on the treadle l6; and when the crank 9 has made a complete revolution the lever 14 will again fall in the notch on the friction-block 13, and thus keep the machine stationary for every time it has made a revolution. One revolution completes the operation of each boot or shoe during the process of trimming the soles. .The adjustable crank 9 is shown in an enlarged view and section in Figs. 5 and 6. On these figures 17 is a s1otho1e, in which the crank-pin 18 is adjustable inand out from the center. The

crank-pin 18 is provided with a nut, 19, by

which the crank-pin is secured to the crankplate 9. The nut 19 also keeps in place the piece 20, provided on its upper side with an expanding groove, 21, as shown. The object of this latter arrangement is to be able to change the length of the'stroke of the machine very quickly, and this is accomplished by the operating-pin 22 entering the groove 21, and by this means presses the crank-pin to the place for which the pin 22 was regulated, by the arrangement of the rod 23, guide 24, and handle 25.

Having thus fully described the nature,

construction and operation of our invention,.

we wish to secure by Letters Patent and claim- 1. The construction and arrangement of the pivoted arms g 9, provided with the circular cutters p gp q, guidefpins 6 6, or their equivalents, and the shoe-guide e, as and for the purpose set forth.

2. In combination with the arms 9 g and cutters p p, the mechanism for operating the latter, consisting of the driving-pulley k, pulleyst' i 0 0, or their equivalents, as herein set forth and described.

3. In combination with the pivoted arms g g, and movable bar (I, the operating-arm 5, curved bar 4, and pivoted last-holder 1 movable in the guides w w, in the manner and for the purpose set forth.

4. The combination of the spiral cutters p p and disk-cutters q (1, when arranged to operate upon the movable arms in the manner as shown, and for the purpose described.

' BERNARD GALLAGHER.

JOHN (DOYLE.

Witnesses:

TM. H. HU'roHINsoN,

ALBAN ANDRI JN. 

